Name on kayak , with radio number /cell phone number . Learn self rescue , practice it !!!! That yak and gear on board looks to be a bit of a mission to get right way up. Stay with yak. Use your communication devices / cell phone if you can , VHF RADIO that is fixed to your jacket. In bad weather it is going to be hard. Use the power of positive thinking, you will need to in the time of need. Tell some person your intentions, take a mate. Yes I fish a lot by myself as others do just always be aware of your situation. When fishing by yourself think more of drifting rather than anchoring to the big base.
In trouble cut away anything obstructing your re-entry without hesitation . When the cold sets in or you get a bit tired you 'WILL' give up.
Again learn to self rescue !!